2620012631 has 2 divisors, whose sum is σ = 2620012632. Its totient is φ = 2620012630.

The previous prime is 2620012621. The next prime is 2620012649. The reversal of 2620012631 is 1362100262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2620012631 - 2⁶ = 2620012567 is a prime.

It is a super-2 number, since 2×2620012631² = 13728932373199084322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2620012597 and 2620012606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620012621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310006315 + 1310006316.

It is an arithmetic number, because the mean of its divisors is an integer number (1310006316).

Almost surely, 2^2620012631 is an apocalyptic number.

2620012631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620012631 is an equidigital number, since it uses as much as digits as its factorization.

2620012631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2620012631 is about 51186.0589516325. The cubic root of 2620012631 is about 1378.5878979420.

Adding to 2620012631 its reverse (1362100262), we get a palindrome (3982112893).

The spelling of 2620012631 in words is "two billion, six hundred twenty million, twelve thousand, six hundred thirty-one".